Screen Function Definition Parameters |
DEVELOPER |
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Screen Function Definition Parameters |
DEVELOPER |
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The Parameters tab on the Function Definition Property Sheet is used to specify the parameters that are supplied when this function is called. The tab is only relevant to Global Functions, unless the function is to be called from a Task. A function does not have to be global to be called from a Task.
To open the Screen Function Definition window, follow these steps:
Open the relevant Screen function.
Click Function Definition Properties 
icon on the PROIV Developer toolbar.
The Screen Function Definition window appears.
Click Parameters tab.
Amend the properties using the using the following table as a guide:
|
Item |
Description |
|
Seq |
Displays the automatically generated sequence number. |
|
I/O |
Enter the type of parameter: I – Input, O – Output, B - Both, E – External, G - Global The external type allows a file variable to be used by a Global Function, without a file that includes the File Variable being read in the function. This causes a gen failure unless the variable is an External parameter. The Global type makes a Task parameter available to any function that is called by the Task, without mapping it through the interface. See also Parameters tab in the Defining a Task topic. |
|
Variable |
Enter the name of the variable to be passed in the parameter |
|
Type |
Enter the variable type, A - Alpha, N - Numeric, or W – Wide |
|
Length |
Enter the length of the variable |
|
Array |
If the variable is an array, enter the number of elements. |
|
Task Variable |
Enter the name of the Task variable to be mapped to this parameter (only used if the function is to be called from a Task). |
|
Notes |
Click to enter or view descriptive notes on the function |
Click OK to close the window and save the changes.
Search. This button, when enabled, allows developers to quickly navigate to and modify specific parameters, significantly reducing the time spent manually scanning large mapping lists. The search capability is only available when the number of displayed parameters exceeds a single page of data. Once the search button is enabled and is clicked the Parameters List Search WindowParameters List Search Window is opened and parameter variable or partial parameter variable names can be displayed for selection.
Topic ID: 500339